angiokeratoma

noun

an·​gio·​ker·​a·​to·​ma ˌan-jē-ō-ˌker-ə-ˈtō-mə 

plural angiokeratomas also angiokeratomata -mət-ə 

: a small, dark red or bluish, benign skin lesion that is composed of dilated capillaries in the upper dermis with accompanying overgrowth of the epidermis and that typically appears singly or in clusters as a raised spot with a scaly or wart-like surface

… a skin lesion called angiokeratoma that often looks like a red rash …

—Katie Charles, The Daily News (New York)

also : a condition marked by the presence of angiokeratomas

She suffers from angiokeratoma, an ailment that causes bleeding and painful infections in her legs.

—Dan Kinvig, The Star Phoenix (Saskatoon, Saskatchewan)

Note: There are several types of angiokeratomas, including one ( angiokeratoma corporis diffusum ) associated with Fabry disease.